DE1960995A1 - Warp release device - Google Patents

Description

«{(! .- ins. II. IiiiTJf !! EIlICK 4th edition 1969

Wp! ..: r ;. t. t -'-: "-:":;<λ π μ

tr. scr. itt. W. »*. “Iif £ R MUNLHEN 22. SfcieuW *. eat

Maschinenfabrik iiliti Λ (ί, vor-saic Caspar Horiegger, 863 0 BU.ti / 2H _f

Switzerland Pat ent arxme

Ke Lt

The present Srfiadunf refers to a ^ e

chtunt 'a · Bremae for a fat tree a vebma ^ ehine which is controllable one among a first ^(/ orspaiinun {? held. Spanawalze in AbhHnfifkeit of Lara and this ha ^ .e ihiöraeits by Lürife of about Bpamiwalze ^ pfJhrt rettfHärn Aviechen agrees with the warp beam and the Wobfach, whereby the tension ribs te * toppelt the warp beam by means of a coupling arrangement with the warp beam.

dan looms serve KottnachXaecuiiorcinuri, _ to "the warp yarns bearing warp beam during dee ^Vf ebderart UEU bet & t.tinm _t elaes oteta the right

^ÄD ORIGINAL

ivrf.4O November 26th 1968 KZ / JK

8826/1543

is supplied by warp threads. Among other things, it is important that the supply of the warp threads is within certain limits. remain. Ea is known to couple the warp beam brake bit for a movable, pretensioned deflection roller for the purpose of the warp thread. As soon as the deflection roller has moved a predetermined amount due to consumption, this coupling will release the brake of the chain, so that the warp threads are unwound by turning the latter and the deflection roller is again reinforced in its outgassing position. As a result, the Kettbaumee's brake is actuated again via the Kopplusf äie

of the great weight of the Kettbauates, especially with volleia Kettbaum, there is a tendency that this is in spite of applied brake while slipping on the latter a bit keeps turning. But since the deflection roller because of its coupling with the brake remains in its position, εο thereby the warp threads loose.

The present invention is intended to address this disadvantage to be avoided · This is characterized by the fact that sine A wide bias is provided, which strives to keep the brake in the closed state and that the brake with the Coupling arrangement coupled in the brake-releasing sense, but is not coupled in the final sense *

The present invention accordingly has the additional advantages that once the brake of the warp beam is constant Strength eats. Furthermore, the fact that the clamping

roller is subjected to permanent pretensioning, inaccuracies, which, for example, can have their cause in the game of the bearings or in areas of wear and tear, eliminated. Ultimately, through that Providing separate pre-tensioning systems for the brake and tensioning roller, the tension of the warp threads is constant when the warp beam is full and when the warp beam is empty.

The invention is now based on an exemplary embodiment and the figure of the drawing explained in more detail.

The figure shows a warp beam in a side view From this the warp threads 12 run over a guide roller 13 a tension roller 14 and a further deflection roller 15 to a shedding point, not shown. The tension roller 14 is on each bark carried by an arm 16. These arms can be pivoted about the axis 17. A tie rod 20 rotatably mounted at 18 and 19 couples the arm 21 with the arm 16. The arm 21 is with your two- « armed lever 22, 23 firmly connected and pivotable about the axis 24 with this. A spring 25 acts on the lever arm 22 constantly exerted a bias. The spring 25 rests against a fixed part of the machine with a connector.

The warp beam 11 has a brake 26. This ict au one end is attached to a fixed machine part, the other end is held in the arm 27. The latter forms the one arm of the two-armed lever 27, 28, the other aria 2b of which is permanently biased by the spring 29. The lever 27, 28 can be pivoted about axis 32. On the arm 28 is an otab 31 a stop 30 is held. The arm 23 hits a

009828/1543

Pivoting counterclockwise against the stop 30, but can Pivot freely in the opposite direction of rotation.

When the loom is in operation, so will warp threads 12 used by the weaving process. These are slowly removed in the direction of arrow 3 3. So long the brakes 26 is tightened, the warp beam 11 stands still. Therefore, the tension roller 14 is pulled by the tension of the warp threads 12, so that the carrier 16 pivot counterclockwise. The carriers 16 are on the other hand by the spring 25 on the parts 22, 21, 20 ic Biased clockwise. Therefore, the pivoting of the carrier 16 caused by the tension of the warp threads takes place against the pressure of the Spring 25.

after a certain amount of warp threads have been used up, the lever arm 23 reaches the stop 30 and presses it downward against the bias formed by the spring 29. As a result, the brake 26 is released, the warp beam begins to rotate counterclockwise, and warp threads are thereby restored subsequently delivered, so the tension roller 14 clockwise again is pivoted towards its starting position. At the same time, the two-armed lever 22, 23 is pivoted clockwise, whereby the pressure on the stop 30 ceases and the brake 26 is closed again by the spring 29.

In particular when the warp beam 11 is full it is the case that these when the brake 26 is closed, because of its great weight, "does not stand still for a moment, but continues a little."

■ ^ GO- ¹ S 8 2 6/1 δ 4 3

ÄD ORIGINAL

rotates, as a result, a little more warp thread 12 is supplied from the warp beam 11. As a result of this, the arms 16 pivot a little more ¹ clockwise due to the pretension 25 »and the arm 23 lifts off from the stop 30» Mve the coupling which the links 20, 21 * 22 * 25 »30 , 28 and 2? In other words, present not only in the opening but also in the closing back, the applied brake 26 would prevent further pivoting of the lever 22, 2'5 in the clockwise direction the warp threads loose. That handicap is due to the

, one-sided coupling avoided.

It can also be seen that the force acting on the entrance of the Wettiaaumes 11 is only through; the? o _; rspannun £; 29 and a © »4t iiwser is the same. Also, as already he ^ ·, the V4: pfcun.g of the bias voltage 25 is on the. Arms 16 are permanently present, eed & ae die Kfsttfädea 1.2- continuously a sucricraft from-- £ &% &% $% ^ 4 »(|, suffering from tension can un ^ bhiiagi ^ each other 4» Χ & ϊ * © * · Gr ^ ee © the corresponding ^ir ebverh81tnieeen ap £. ^r epasat fi # ie ι · Β% 4t? warp beam size »the number of threads and the

With dftffl Äufbra, viohea of warp threads through the weaving process öle apann ^ iiLLze 14 swiveled and the spring 25 zueaannenge-

Meee ^ ft "is mengepreset upon abutment of the arm 23 against the stop, the spring 29 zunÄtzlioh aur.a ^ is üb to Aich

i these suo & t & li © hen ßelaetuagen, by suitable arrangement the Tröger 16 gu kcrap »ü3ieren. If this with the decrease

BAD ORIGINAL ÖO902 & / 1543

196Q995

the length of a warp thread 12 pivot in a position in which see the roller 14 in relation to one laid by the axis 17, ' The right bank is on the left, so the gravity of the roller 14 acts against the above-mentioned additional loads. By suitable dimensioning of the parts acting on the susatBUien can thus compensate this additional in this way Loads are preserved * whereby an improved balance of the tension of the warp threads is created «

The device described is suitable for normal warp threading as well as for slacking off the flat warp threads.

Claims (5)

Expectations Warp release device with a brake for a warp beam of a weaving machine, which, depending on the position of a The tensioning roller held under a first pretension can be controlled and this position in turn is controlled by the length of the tensioning roller over the tensioning orphan guided warp threads between "the warp beam and the 'nebfach is determined, the tension roller by means of a coupling arrangement coupled with the brake for the warp beam, thereby characterized in that a second bias (29) is provided, which strives to the brake (26) in the closed Allotment and that the brake (26) with the coupling arrangement (20, 23 t 31t 27) in the sense that releases the brake (26) coupled, but not coupled in the final sense. 2. Kettnachlassvorrichtung according to claim 1, characterized in that, that the coupling arrangement (20, 23 »31» 27) comprises a movable member (27 »26, 30, 31) which with the brake (26) is connected and serves to actuate it and which is partly due to the second preload; (29) in the brake (26) is biased in the final sense and on the other hand by the remaining part of the coupling arrangement (20, 21, 23) can be actuated in the direction that releases the brake (26), and in the opposite direction this remaining part of the coupling arrangement (20, 21, 23) however in Bezup on the movable link (27, 28, 30, 31) is free. 009 8 26/1543 3. warp release device according to claim 2, characterized in that that the movable member (27, 28, 30, 3D comprises a two-armed lever (27, 28), one arm (27) with the Brerase (26) is connected to actuate the same and on the other arm (28) of which the second prestress (29) acts continuously and this second arm (28) has a stop (30), against Mehrehen the remaining part of the coupling arrangement (20, 21, 23) can strike on one side. 4. Kettnachlassvorrichtung according to claim 2, characterized gekennzelehnet that the first bias (25) on the remaining part of the coupling arrangement (20, 21, 22, 23) of the Epannwalse (IA) is fed and this is actuated in the sense in which this remaining Part (20, 21, 22, 23) with respect to the movable member (27, 28, 30) is free. 5. warp release device according to claim 4, characterized in that that the first bias (25) on a two-armed Lever (22, 23) acts, which via a connection; clink (2ü) exerts a torque on pivotable arms (16), on which the tension roller (14) is mounted, the one Arm (22) of this two-armed lever (22, 23) constantly under pressure the first bias (25) is exposed and the other Ar ::. (23) de ;, two-armed lever (22, 23) when moving ge, ;; en die first bias (25) the movable member (27 »28, 30) actuated and when moving in the sense of the first bias (2!>) With regard to the movable member (27, 28, 30) being free. ⁵ '0098 26/154 3 BAD ORIGINAL 6 «Kettnachlassvorrichtung according to claim l _f characterized 'in that the clamping sleeve (14) is mounted on arms (.16), soft, rotatable about a Drehrtchse (17) and vc λ äleaev upward are un: - goblets aurch the Lug the warp thread in T) OTMC on you. Rotation axis (17) arrive in a f.chr & öla ^ e, which alο lOl & e the gravity of the Opanawaiae a Verfrösöeruri ^ the torque of these arms (XlS) around this Lrebachae (17), which arises the tfrehiEOrr.errt formed by the first (23) works. Btr 008020/1643 * ° # 0 lee rs e i f e